Hidden Library - Mystery, Cozy Mystery & Thriller Book Deals

1. Author Information

Contact details for communication about your submission

Author Name *

Pen Name (if different)

Contact Email *

Website or Social Link (optional)

For internal reference only (not included in newsletter)

2. Book Information

How your book will appear to readers

Book Title *

Series Title (if applicable)

Book Number in Series

Main Genre *

Currently accepting Mystery books only

Subgenre *

Short Tagline or Hook *

Maximum 150 characters

Short Description *

0 / 500 characters

3. Content Warnings

📋 Content Policy

We do not accept books with explicit sexual content or animal cruelty/torture.

Violence Level *

Does your book contain:

Explicit sexual content - Not acceptedAnimal cruelty/torture - Not accepted

4. Cover Image

JPG or PNG, minimum 600x900px, max 3MB

Upload Cover File *

JPG, PNG, WebP • Max 3 MB

5. Retailer Links

We link to official retailer pages only

Primary Retailer Link *

Amazon, Kobo, Apple Books, etc.

ASIN (Amazon ID) *

10-character code from Amazon

Additional Link 1 (optional)

Additional Link 2 (optional)

6. Pricing Details

Current deal information

Deal Type *

Regular Price

Promo Price

In Kindle Unlimited

6.5 Preferred Date *

Promotions go out daily at 10 AM ET. Select your preferred date.

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7. Newsletter Subscription

Subscribe to see your book featured when it goes live!

Yes, subscribe me! I can unsubscribe anytime.

8. Legal Confirmations

Please confirm before submitting

I own rights to promote this book or am authorized *I give permission to display cover, title, description publicly *I understand FREE submission doesn't guarantee inclusion; paid slots with guaranteed placement coming soon *I understand links go to official retailers only *I agree to data processing per Privacy Policy *

Ready to submit? We review every submission carefully.

Submit Your Mystery Book